el sr @ignaciovidal nos dejo manijas para repasar como funcionaba la herencia multiple en Python

gistfile1.txt

>>> class A():
...:     def uno(self):
...:         print("A uno")

>>> class B():
...:     def uno(self):
...:         print("B uno")
...:     def dos(self):
...:         print("B dos")
...:
	
>>> class Mixin:
...:     def uno(self):
...:         print("Mixin uno")
...:         super().uno()
...:     def dos(self):
...:         print("Mixin dos")
...:         super().dos()
...: 
	
>>> class C(A, B, Mixin):
...:     pass
...: 

>>> c = C()

>>> c.uno()
A uno
	
>>> class C(Mixin, A, B):
...:     pass
...: 

>>> c = C()

>>> c.uno()
Mixin uno
A uno

>>> class C(Mixin, B, A):
...:     pass
...: 

>>> c = C()

>>> c.uno()
Mixin uno
B uno

>>> class C(Mixin, A, B):
...:     pass
...: 

>>> c = C()

>>> c.dos()
Mixin dos
B dos

>>> C.__mro__
(__main__.C, __main__.Mixin, __main__.A, __main__.B, object)

# Un ejemplo donde E hereda de otra clase.
# La clase D no tiene metodo dos()

>>> class D:
...:     def uno(self):
...:         print("D uno")
...: 

>>> class E(D):
...:     def uno(self):
...:         print("E uno")
...:         super().uno()
...:     def dos(self):
...:         print("E dos")
...:         super().dos()
...: 

>>> class C(E, A, B):
...:     pass
...: 

>>> c = C()

>>> c.uno()
E uno
D uno

>>> c.dos()
E dos
B dos

>>> C.__mro__
(__main__.C, __main__.E, __main__.D, __main__.A, __main__.B, object)

Python Multiple Inheritance – Python MRO (Method Resolution Order)

C3 linearization!